sql: SHOW CREATE ALL ROUTINES

docs/generated/sql/bnf/show_create_stmt.bnf

@@ -3,3 +3,4 @@ show_create_stmt ::=
 	| 'SHOW' 'CREATE' 'ALL' 'SCHEMAS'
 	| 'SHOW' 'CREATE' 'ALL' 'TABLES'
 	| 'SHOW' 'CREATE' 'ALL' 'TYPES'
+	| 'SHOW' 'CREATE' 'ALL' 'ROUTINES'

docs/generated/sql/bnf/stmt_block.bnf

@@ -855,6 +855,7 @@ show_create_stmt ::=
 	| 'SHOW' 'CREATE' 'ALL' 'SCHEMAS'
 	| 'SHOW' 'CREATE' 'ALL' 'TABLES'
 	| 'SHOW' 'CREATE' 'ALL' 'TYPES'
+	| 'SHOW' 'CREATE' 'ALL' 'ROUTINES'
 
 show_create_schedules_stmt ::=
 	'SHOW' 'CREATE' 'ALL' 'SCHEDULES'

pkg/sql/delegate/delegate.go

@@ -74,6 +74,9 @@ func TryDelegate(
 	case *tree.ShowCreateAllTypes:
 		return d.delegateShowCreateAllTypes()
 
+	case *tree.ShowCreateAllRoutines:
+		return d.delegateShowCreateAllRoutines()
+
 	case *tree.ShowDatabaseIndexes:
 		return d.delegateShowDatabaseIndexes(t)
 

pkg/sql/delegate/show_function.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/cockroachdb/cockroach/pkg/sql/lexbase"
 	"github.com/cockroachdb/cockroach/pkg/sql/sem/tree"
+	"github.com/cockroachdb/cockroach/pkg/sql/sqltelemetry"
 	"github.com/cockroachdb/errors"
 )
 
@@ -85,3 +86,16 @@ AND %[1]s = %[4]s
 		nameCol, tab, lexbase.EscapeSQLString(udfSchema), lexbase.EscapeSQLString(un.Parts[0]))
 	return d.parse(fullQuery)
 }
+
+func (d *delegator) delegateShowCreateAllRoutines() (tree.Statement, error) {
+	sqltelemetry.IncrementShowCounter(sqltelemetry.Create)
+
+	const showCreateAllRoutinesQuery = `SELECT crdb_internal.show_create_all_routines(%[1]s) AS create_statement;`
+	databaseLiteral := d.evalCtx.SessionData().Database
+
+	query := fmt.Sprintf(showCreateAllRoutinesQuery,
+		lexbase.EscapeSQLString(databaseLiteral),
+	)
+
+	return d.parse(query)
+}

pkg/sql/logictest/testdata/logic_test/show_create_all_routines

@@ -0,0 +1,164 @@
+statement ok
+CREATE DATABASE d
+
+statement ok
+USE d
+
+query T colnames
+SHOW CREATE ALL ROUTINES;
+----
+create_statement
+
+statement ok
+CREATE FUNCTION add_one(x INT) RETURNS INT AS 'SELECT x + 1' LANGUAGE SQL;
+
+query T colnames
+SHOW CREATE ALL ROUTINES;
+----
+create_statement
+CREATE FUNCTION public.add_one(x INT8)
+  RETURNS INT8
+  VOLATILE
+  NOT LEAKPROOF 
+  CALLED ON NULL INPUT
+  LANGUAGE SQL
+  SECURITY INVOKER
+  AS $$
+  SELECT x + 1;
+$$;
+
+statement ok
+CREATE OR REPLACE PROCEDURE double_triple(INOUT double INT, OUT triple INT)
+AS $$
+BEGIN
+  double := double * 2;
+  triple := double * 3;
+END;
+$$ LANGUAGE PLpgSQL;
+
+
+query T colnames,rowsort
+SHOW CREATE ALL ROUTINES;
+----
+create_statement
+CREATE FUNCTION public.add_one(x INT8)
+  RETURNS INT8
+  VOLATILE
+  NOT LEAKPROOF
+  CALLED ON NULL INPUT
+  LANGUAGE SQL
+  SECURITY INVOKER
+  AS $$
+  SELECT x + 1;
+$$;
+CREATE PROCEDURE public.double_triple(INOUT double INT8, OUT triple INT8)
+  LANGUAGE plpgsql
+  SECURITY INVOKER
+  AS $$
+  BEGIN
+  double := double * 2;
+  triple := double * 3;
+  END;
+$$;
+
+statement ok
+CREATE FUNCTION add_one(x FLOAT) RETURNS FLOAT AS 'SELECT x + 1' LANGUAGE SQL;
+
+query T colnames,rowsort
+SHOW CREATE ALL ROUTINES;
+----
+create_statement
+CREATE FUNCTION public.add_one(x INT8)
+  RETURNS INT8
+  VOLATILE
+  NOT LEAKPROOF
+  CALLED ON NULL INPUT
+  LANGUAGE SQL
+  SECURITY INVOKER
+  AS $$
+  SELECT x + 1;
+$$;
+CREATE FUNCTION public.add_one(x FLOAT8)
+  RETURNS FLOAT8
+  VOLATILE
+  NOT LEAKPROOF
+  CALLED ON NULL INPUT
+  LANGUAGE SQL
+  SECURITY INVOKER
+  AS $$
+  SELECT x + 1;
+$$;
+CREATE PROCEDURE public.double_triple(INOUT double INT8, OUT triple INT8)
+  LANGUAGE plpgsql
+  SECURITY INVOKER
+  AS $$
+  BEGIN
+  double := double * 2;
+  triple := double * 3;
+  END;
+$$;
+
+
+#test dropping routines
+statement ok
+DROP FUNCTION add_one(x INT8);
+
+statement ok
+DROP FUNCTION add_one(x FLOAT8);
+
+query T colnames
+SHOW CREATE ALL ROUTINES;
+----
+create_statement
+CREATE PROCEDURE public.double_triple(INOUT double INT8, OUT triple INT8)
+  LANGUAGE plpgsql
+  SECURITY INVOKER
+  AS $$
+  BEGIN
+  double := double * 2;
+  triple := double * 3;
+  END;
+$$;
+
+statement ok
+DROP PROCEDURE double_triple;
+
+query T colnames
+SHOW CREATE ALL ROUTINES;
+----
+create_statement
+
+# test user defined schema
+statement ok
+CREATE SCHEMA s;
+
+statement ok
+CREATE FUNCTION add_one(x INT) RETURNS INT AS 'SELECT x + 1' LANGUAGE SQL;
+
+statement ok
+CREATE FUNCTION s.add_one(x INT) RETURNS INT AS 'SELECT x + 1' LANGUAGE SQL;
+
+query T colnames,rowsort
+SHOW CREATE ALL ROUTINES;
+----
+create_statement
+CREATE FUNCTION public.add_one(x INT8)
+  RETURNS INT8
+  VOLATILE
+  NOT LEAKPROOF
+  CALLED ON NULL INPUT
+  LANGUAGE SQL
+  SECURITY INVOKER
+  AS $$
+  SELECT x + 1;
+$$;
+CREATE FUNCTION s.add_one(x INT8)
+  RETURNS INT8
+  VOLATILE
+  NOT LEAKPROOF
+  CALLED ON NULL INPUT
+  LANGUAGE SQL
+  SECURITY INVOKER
+  AS $$
+  SELECT x + 1;
+$$;